@charset "UTF-8";
$r:750/16/1rem;
.video_cont{
  width: 750/$r;
  height: 422/$r;
  margin: 0 auto;
  background-color: #CCCCCC;
}
.minor_nav{
  width: 750/$r;
  margin: 0 auto;
}
.minor_video_nav{
  width: 750/$r;
  display: flex;
}
.minor_video_nav li{
  list-style: none;
  height:90/$r;
  flex: 1;
  box-sizing: border-box;
}
.minor_video_nav li a{
  line-height: 90/$r;
  text-align: center;
  color: #666666;
  font-size: 28/$r;
  border-bottom: 2px solid #ffffff;

  display: block;
}
.minor_video_nav_act{
  color: #0099FF!important;
  border-bottom: 2px solid #0099FF!important;
}
.minor_detail_cont{
  width: 750/$r;
  margin:2px auto 0 auto;
  border-top:1px solid #e8e9e9;
}

.video_text_cont{
  width:710/$r;
  margin: 0 auto;
  padding: 30/$r 0 60/$r 0;
  font-size: 28/$r;
  color: #333333;
}
/***视频列表***/

.video_wrap{
  width:710/$r;
  margin: 0 auto;
  padding: 30/$r 0 60/$r 0;
  background-color: #FFFFFF;
}
.kb_icon{
  width:48/$r;
}
.cour_tit{
  font-size:32/$r;
  color: #333333;
}
.list_w{
  width: 600/$r;
  margin: 0 auto;
}
.cour_type{
  margin: 20/$r 0;
  font-size: 28/$r;
  color: #333333;
}
.cour_list{
  margin-top:30/$r;
  padding-left:30/$r;
  border-left:1px solid #CCCCCC;
}
.cour_list li{
  font-size: 28/$r;
  line-height:68/$r;
  list-style: none;
  color: #666666;
  position: relative;
  text-overflow: ellipsis;
}
.cour_item{

}
.left_circle{
  width:22/$r;
  height:22/$r;
  background-color: #FFFFFF;
  border:2/$r solid #0099FF;
  border-radius: 50%;
  display: block;
  box-sizing: border-box;
  position: absolute;
  top:23/$r;
  left:-42/$r;
}
.cour_list li:first-child{
  margin-bottom:18/$r;
  line-height:20/$r;
}
.cour_list li:first-child span{
  top: 0;
}
.cour_list li:last-child{
  margin-top:18/$r;
  line-height:20/$r;
}
.cour_list li:last-child span{
  top: -1/$r;
}
.list_act{
  color: #0099FF!important;
  font-weight: bold;
}